Fortezza Rohan, Military fortress in Susch, Switzerland

Fortezza Rohan is a military fortress sitting atop the Khaschina hilltop above Susch, featuring a star-shaped outer wall with three gates. The walls rise between 2.5 and 5 meters high and form a geometric design typical of 17th-century defensive structures.

Duke Henri II de Rohan commissioned this fortress in 1635 during the Thirty Years' War to protect the region from Spanish and Austrian attacks. The structure was part of a broader military strategy to safeguard borders during this turbulent era.

Locals call the fortress after its builder, Duke Henri II de Rohan, who had it raised in May 1635 with Jörg Jenatsch and Captain Borel de la Roque-Servière. The Susch villagers resented the requisition of lime from their households and parishes, and Jenatsch complained about them in a letter, calling them "gente di poco". Since 1985 the association Pro Fortezza Rohan has worked to keep the ruin open to visitors.

The ascent to the fortress follows a marked walking path of about 15 minutes from the village of Susch, which has regular train connections to Chur and Upper Engadine. The site is freely accessible but requires sturdy footwear and involves uphill walking.

The fortress was raised in just eight days in May 1635 by 600 men under Captain Borel de la Roque-Servière and Jörg Jenatsch. Stone came from the demolished medieval castle of the Cazins family, sand from a lens still visible just below the walls, and lime was requisitioned from the households of Susch, whose residents objected; Jenatsch called them "gente di poco" in a letter.